The Devil

The gif in question:

Goats have a goatee, goat-feet, a perceptible smell, horns, and sound like an evil laugh. Also, they have a nasty habit of taking people by surprise in places no sane people would imagine a large animal could be.

No need to mess with deer in weird positions.

gerenuk aka the giraffe gazelle.

(Antelope)

I think there was a reference to it in infinite train as well, but I can't remember where exactly.